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96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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#ifndef nsTextTransformer_h___
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#define nsTextTransformer_h___
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#include "nsTextFragment.h"
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#include "nsISupports.h"
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class nsIFrame;
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class nsTextRun;
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/**
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* This object manages the transformation of text:
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*
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* <UL>
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* <LI>whitespace compression
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* <LI>capitalization
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* <LI>lowercasing
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* <LI>uppercasing
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* </UL>
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*
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* Note that no transformations are applied that would impact word
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* breaking (like mapping into space, for example). In
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* addition, this logic will not strip leading or trailing whitespace
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* (across the entire run of text; leading whitespace can be skipped
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* for a frames text because of whitespace compression).
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*/
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class nsTextTransformer {
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public:
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nsTextTransformer(PRUnichar* aBuffer, PRInt32 aBufLen);
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~nsTextTransformer();
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/**
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* Initialize the text transform. This is when the transformation
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* occurs. Subsequent calls to GetTransformedTextFor will just
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* return the result of the single transformation.
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*/
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nsresult Init(/*nsTextRun& aTextRun, XXX*/
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nsIFrame* aFrame,
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PRInt32 aStartingOffset);
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PRInt32 GetContentLength() const {
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return mContentLength;
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}
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PRUnichar* GetNextWord(PRBool aInWord,
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PRInt32& aWordLenResult,
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PRInt32& aContentLenResult,
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PRBool& aIsWhitespaceResult);
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PRBool HasMultibyte() const {
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return mHasMultibyte;
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}
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PRUnichar* GetTextAt(PRInt32 aOffset);
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protected:
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PRBool GrowBuffer();
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PRUnichar* mAutoBuffer;
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PRInt32 mAutoBufferLength;
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PRUnichar* mBuffer;
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PRInt32 mBufferLength;
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PRBool mHasMultibyte;
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PRInt32 mContentLength;
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PRInt32 mStartingOffset;
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PRInt32 mOffset;
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const nsTextFragment* mFrags;
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PRInt32 mNumFrags;
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const nsTextFragment* mCurrentFrag;
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PRInt32 mCurrentFragOffset;
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PRUint8 mTextTransform;
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PRUint8 mWhiteSpace;
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};
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#endif /* nsTextTransformer_h___ */
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